jaybebo wrote:
What about the first question? Are these add-ons only functional on Mozilla Firefox?
All the add-ons will work with Mozilla Firefox. Some of the add-ons require greasemonkey to be installed first. Greasemonkey was developed for Firefox. Some of the add-ons require Firefox, but not greasemonkey. Some of the utilities are not installed in the browser, but are separate from the browser. The add-on should indicate what its requirements are.
In theory, there is a greasemonkey equivalent for IE7 (which you might find by googling "IE7 greasemonkey." You could then install the greasemonkey equivalent followed by installing the greasemonkey add-ons and in theory it should work. I have not done so myself, nor have I seen any reports of someone doing so successfully yet.
There are even some utilities that do not appear in this thread, but are available from elsewhere in this forum (which you might find by using the forum search and looking for "free").
Good luck.